Comment 0 for bug 1401150

-- Problem Description --
The current VPHN code assumes the NUMA toplogy updates data are big endian. They are native endian actually since the hypervisor pass them through registers. This has a great performance impact on little endian guests.

A fix has been sent to fix the issue:

http://patchwork.ozlabs.org/patch/396171/

Please pick the following commit from Michael Ellermans's tree:

http://git.kernel.org/cgit/linux/kernel/git/mpe/linux.git/commit/?id=5c9fb1899400096c6818181c525897a31d57e488

which reads: "powerpc/vphn: NUMA node code expects big-endian"

Now upstream:

commit 5c9fb1899400096c6818181c525897a31d57e488
Author: Greg Kurz <email address hidden>
Date: Wed Oct 15 12:42:58 2014 +0200

    powerpc/vphn: NUMA node code expects big-endian